మూస:Infobox molybdenum

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మాలిబ్డెనం, 00Mo
మాలిబ్డెనం
Pronunciation/məˈlɪbdənəm/ (-LIB--nəm)
Appearancegray metallic
Standard atomic weight Ar°(Mo)
మాలిబ్డెనం in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Cr

Mo

W
నియోబియంమాలిబ్డెనంటెక్నీషియం
Groupమూస:Infobox element/symbol-to-group/format
Periodperiod 5
Block  d-block
Electron configuration[Kr] 4d5 5s1
Electrons per shell2, 8, 18, 13, 1
Physical properties
Phase at STPsolid
Melting point2896 K ​(2623 °C, ​4753 °F)
Boiling point4912 K ​(4639 °C, ​8382 °F)
Density (near r.t.)10.28 g/cm3
when liquid (at m.p.)9.33 g/cm3
Heat of fusion37.48 kJ/mol
Heat of vaporization598 kJ/mol
Molar heat capacity24.06 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2742 2994 3312 3707 4212 4879
Atomic properties
Oxidation states−4, −2, −1, 0, +1,[3] +2, +3, +4, +5, +6 (a strongly acidic oxide)
ElectronegativityPauling scale: 2.16
Atomic radiusempirical: 139 pm
Covalent radius154±5 pm
Color lines in a spectral range
Spectral lines of మాలిబ్డెనం
Other properties
Natural occurrenceprimordial
Crystal structurebody-centered cubic (bcc)
Body-centered cubic crystal structure for మాలిబ్డెనం
Speed of sound thin rod5400 m/s (at r.t.)
Thermal expansion4.8 µm/(m⋅K) (at 25 °C)
Thermal conductivity138 W/(m⋅K)
Thermal diffusivity54.3[4] mm2/s (at 300 K)
Electrical resistivity53.4 n Ω⋅m (at 20 °C)
Magnetic orderingparamagnetic[5]
Young's modulus329 GPa
Shear modulus126 GPa
Bulk modulus230 GPa
Poisson ratio0.31
Mohs hardness5.5
Vickers hardness1530 MPa
Brinell hardness1500 MPa
CAS Number7439-98-7
History
DiscoveryCarl Wilhelm Scheele (1778)
First isolationPeter Jacob Hjelm (1781)
Isotopes of మాలిబ్డెనం
Template:infobox మాలిబ్డెనం isotopes does not exist
 Category: మాలిబ్డెనం
| references

References

  1. "Standard Atomic Weights: Molybdenum". CIAAW. 2013.
  2. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
  3. "Molybdenum: molybdenum(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.
  4. A. Lindemann, J. Blumm (2009). Measurement of the Thermophysical Properties of Pure Molybdenum. 17th Plansee Seminar. Vol. 3.
  5. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
  6. "Molybdenum: molybdenum(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.